GE AF-650 GP Programming Manual page 67

Parameter Descriptions
3.7.2 H-2# Motor Feedback Monitoring
Parameters to configure Motor Feedback Monitoring.
H-20 Motor Feedback Loss Function
Option:
3 3
[0] Disabled
[1] Warning
[2] Trip
*
[3] Jog
[4] Freeze Output
[5] Max Speed
[6] Switch to Open
Loop
[7] Select Setup 1
[8] Select Setup 2
[9] Select Setup 3
[10] Select Setup 4
[11] Stop & Trip
Warning 90 Feedback monitor is active as soon as the value
in parameter H-21 Motor Feedback Speed Error is exceeded,
regardless of the setting of parameter H-22 Motor Feedback
Loss Timeout. Warning/Alarm 61, Feedback Error is related to
the motor feedback loss function.
H-21 Motor Feedback Speed Error
Range:
300 RPM [1 - 600 RPM] Select the maximum allowed error in
*
66
Function:
This function is used to monitor
consistency in feedback signal, that is if
the feedback signal is available.
Select which reaction the frequency
converter should take if a feedback fault
is detected. The selected action is to take
place when the feedback signal differs
from the output speed by the value set in
parameter H-21 Motor Feedback Speed
Error for longer than the value set in
parameter H-22 Motor Feedback Loss
Timeout.
Function:
speed (output speed vs. feedback).
02/2016 All rights reserved.
Illustration 3.23 Motor Feedback Speed Error
H-22 Motor Feedback Loss Timeout
Range: Function:
0.05 s [0 - 60 Set the timeout value allowing the speed
*
s] error set in parameter H-21 Motor Feedback
Speed Error to be exceeded before enabling
the function selected in parameter H-20 Motor
Feedback Loss Function.
H-23 Motor Check At Start
Option: Function:
NOTICE
This parameter cannot be adjusted while the
motor runs.
NOTICE
Valid for AF-650 GP only
Use this parameter to detect the missing motor phase
during motor stand-still. Shows alarm 30, Motor phase
U missing, alarm 31, Motor phase V missing, or alarm
32, Motor phase W missing in the event of a missing
motor phase during stand-still. Use this function
before disengaging a mechanical brake. Enable this
function to avoid motor damage.
[0] Off
* CAUTION
RISK OF MOTOR DAMAGE
Using this option may lead to a motor damage.
The frequency converter does not issue a missing
motor phase alarm.
[1] On Before each start, the frequency converter checks if all
3 motor phases are present. The check is performed
DET-618D